Water-purifying apparatus.



No. 708,7l7. Patemedsept. 9, |902.

yc. L. KENmcoTT. WATER PURIFYING APPARATUS.

(Application mea may 9,1902.)

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UNITED STATES 4PATENT OFFICE.

CASS L. KENNICOTT, OF CHICAGO, ILLINOIS, ASSIGNOR TO KENNICOTT WATER SOF'IENER COMPANY, OF CHICAGO, ILLINOIS, A CORPORA- TIoN or ILLINOIS.`

VwATi-:R-F'URIFYING APPARATUS.l

SPECIFICATION forming part of Letters Patent No. 708,717, dated September 9, 1902. Application filed May 9| 1902. Serial No. 106,661. (No modelz) To a/ZZ whom 7175 may concern:

Be it known that I, CAss L'. KENNICOTT, a citizen of the UnitedStates, residing at Chicago, in the county of Cook and State of Illinois,haveinventedanew and usefullmprovement in Tater-Purifying Apparatus,ot` which the following is a specication.

My invention relates particularly to Waterpurifying apparatus cmployedfor treating hard7 Water chemically to form insoluble compounds which will be deposited as precipitates that can be removed at will.

The present invention is in the nature of an improvement on the apparatus described in my allowed application, Serial No. 72,665, filed August 20, 1901; `and the object of the invention is to provide for moreV thorough mixing of the hard water and the chemical agents, as Well as to make further provisions against freezing.

My improvements are illustrated in the accompanying drawing, which represents 2 a broken vertical section of apparatusembody-A ing said improvements.

The preferred construction is as follows: A represents a precipitating-tank having a downwardly-,flaring doWntake-conduit A' and an upwardly-enlarging uptake-conduit A2; B, an annular soft-water-storage tank' surrounding the upper portion of the tank A; C, a chemical-solution(lime-water) tank located in the upper portion of the-conduitV A and divided by a screen C to aord at its upper portion a mixing-chamber C2; C3, a vertically-disposed stirrer-shaft located in the tank C and equipped with upper and lower stirrers C4 C5, respectively; C, a pipe leading to the bottom of the tank C and having at its upper end branch pipes C7 C2; D, a lime-slaking tank where charges ofA milk of lime are prepared and which communicates with the branch pipe C7; D', a screen for the tank D; D2, a valve for the pipe C7; E, a soft- Water tank supplied `with a discharge-faucet E' and in communication. with the branch pipe C2; F, a Water-lift forraising soft Water ing a Water-wheel G'and having a dischargespout G2; G2, a hard-water tank; H, a chemical-solution (soda-solution) tank having a discharge-pipe H opening into the chamber C2; H2 H3, alternately-used charge-preparing tanks communicating, respectively, through branch pipes H4 H5 with a pipe H6, communieating with the Atank H; H7, a fioat-controlled valve controlling the admission to the tank H; I, a supply-pipe receiving Water from a hydrant orl other supply source (not shown) andhaving a branch I", supplying the tank G2, and a branch I2, terminating in va swinging section I3, supplying the 'tanks H2 H2; J, a float which regulates in'a manner now well understood the outlets from the tanks E and H; K, a discharge-pipe connected with the tank B; K, a valve controlling the discharge through the pipe K and equipped with a chain K2, passing over a pulley K2 at the top of the ltank B; L, an overflow-pipe for the tank A,

having its discharge end located adjacent to the valve K; 'M, a bottomfor the tank A, supplied with a valve M; M2, a dischargepipe connected with the bottom of the tank Cand passing through the bottom M, and M3 a valve for the pipe M2.

The general operation of similar machines is well understood, and a brief description of the operation of the improved machine will suffice. The water-wheel is turned by the water entering the machine and in turn operates the shaft C3 and thelift F. In practice the head of water in the tank J varies, and the head of pressure acting at the discharges of the tanks E and H isautomatically varied correspondingly. As required, charges of milk of lime are prepared at the tank E i (water being drawn through a faucet E) and admitted to the'bottom of the tank C through the pipe C6. Soft Water presses continually through the pipe C6 and dissolves the lime in suspension at the bottom of the tank C, forming clear lime-Water, which wells up through the sieve C. In the chamber C2 the limewater, the soda solution, and thehard water meet and are thoroughly mixed by the stirrer C4. Chemical combinations are readily effectedunder such conditions, and the mixture overflows into the conduit A', where the settling mainly takes place. The water finally. passes up through screens and alter in the IOO conduit A2 and overflows through the pipe L, continually washing the valve K' and preventing freezing thereat. The tank B is drawn upon at will as soft water is required for boiler purposes `or for other use. The tank A usually varies in height from fifteen feet to forty feet, and the tanks B and C usually are of about one-half the depth of the tank A.

What I regardas new, and desire to secure by Letters Patent, is-

1. In appliratus of the character described, the combina-tion of a precipitating-tank, a chemical-solution tank therein having its upper portion serving as a mixing-chamber and provided with an overiiow into said preci pitating-tank, and a water-supply source with a discharge opening into said mixing-chamber.

2. In apparatus of the character described, the combination of a precipitating-tank, a chemical-solution tank therein having its upper portion serving as a mixing-chamber and provided with an overiow into saidprecipitating-tank, a water-supply source With a discharge opening into said mixing-chamber,and a second` chemical-solution tank with a discharge opening into said mixing-chamber.

3. In apparatus of the character described, the combination of a precipitating-tank, a chemical-solution tank therein having its upper portion serving as a mixing-chamber and provided with an overflow into said precipitating-tank, a water-supply source With a discharge opening into said mixing-chamber, a second chemical-solution tank with a discharge opening into said mixing-chamber, and stirrers for the lower portion of said firstnamed chemical-solution tank and said inixing-chamber.

et. In apparatus of the character described, the combination of a precipitating-tank, a chemical-solution tank equipped with a horital screen near its upper end and divided thereby to afford a mixing-chamber above said screen, means of admitting liquid to said chemical-solution tank beneath said screen, and a Water-supply source discharging into said mixing-chamber.

5. In apparatus of the character described, the combination of a precipitating-tank, a

chemical-solution tank having its upper portion serving as a mixing-chamber and provided with an overflow into said precipitatingtank, an elevated source of supply connected with the lower portion of said second-named tank, a hard-water-supply source discharging into said mixing-chamber, and a second chemical-solution tank discharging into said mixing-chamber, for the purpose set forth.

6. In apparatus of the character described, the combination of a precipitating-tank, a chemical-solution tank, a charge-preparing tank communicating through a valved pipe with the lower portion of said chemical-solution tank, a soft-Water tank communicating withthe lower portion of said chemicalsolution tank, and a source of hard-water supply, for the purpose set forth.

7. In apparatus of the character described, the combination of a precipitating-tank, a chemical-solution tank, a charge-preparing tank communicating through a valved pipe with the lower portion of said chemical-solution tank, a soft-water tank communicating with said valved pipe, a source of hard- Water supply discharging into the upper portion of said chemical-solution tank, and a second chemical-solution tank discharging into the upper portion of said first-named chemical-solution tank, the overflow passing into said precipitating-tank, for the purpose set forth.

8. The combination of a precipitating-tank, a hard-Watersource, a chemical source, a softwater-storage tank having a closed discharge- Valve, and means for directing the water from the precipitating-tank upon said valve, for the purpose set forth.

9. The combination of a precipitating-tank, a hard-water source, a chemical source, an annular soft-water-storage tank encircling the precipitating-tank and having a closed discharge-valve, and an overfioW-pipe leading from the upper portion of said precipitating-tank to a point adjacent to said valve, for the purpose set forth.

CASS L. KENNICOTT.

In presence of- L. HEISLAR, ALBERT D. BACCI. 

